1917109073399 has 12 divisors (see below), whose sum is σ = 2077203782952. Its totient is φ = 1768547196000.

The previous prime is 1917109073389. The next prime is 1917109073423. The reversal of 1917109073399 is 9933709017191.

It is not a de Polignac number, because 1917109073399 - 2²⁴ = 1917092296183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1917109073339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3225077 + ... + 3772974.

It is an arithmetic number, because the mean of its divisors is an integer number (173100315246).

Almost surely, 2^{1917109073399} is an apocalyptic number.

1917109073399 is a deficient number, since it is larger than the sum of its proper divisors (160094709553).

1917109073399 is a wasteful number, since it uses less digits than its factorization.

1917109073399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6999698 (or 6999685 counting only the distinct ones).

The product of its (nonzero) digits is 2893401, while the sum is 59.

The spelling of 1917109073399 in words is "one trillion, nine hundred seventeen billion, one hundred nine million, seventy-three thousand, three hundred ninety-nine".